Advances in Web Mining and Web Usage Analysis 6th International Workshop on Knowledge Discovery on the Web, WebKDD 2004, Seattle, WA, USA, August 22-25, 2004, Revised Selected Papers - Mobasher, Bamshad; Nasraoui, Olfa; Liu, Bing; Masand, Brij (Springer Berlin Heidelberg : Imprint: Springer, 2006)